A detection device for measuring the symmetry of both sides of a broach

Abstract

The present invention relates to the technical field of manufacturing by roulette broaching, and discloses a detection device for measuring the symmetry of both sides of a broach, which includes a bracket. One side of the bracket is provided with a slider base, and a slider is fixedly arranged on the side of the slider base away from the bracket. A linear guide is slidably connected to the slider. One end of the linear guide is provided with a dial gauge holder. The end of the dial gauge holder away from the linear guide is bifurcated in a Y shape, and two dial indicators are symmetrically arranged on the Y-shaped bifurcation. The gauge frames of the two dial indicators are fixedly connected to the dial gauge holder through second locking bolts, and the measuring heads of the two dial indicators are close to each other and form a certain angle; a set of broaches includes a tool holder and a plurality of broaches, and alignment blocks are fixedly arranged at the front end and the rear end of the tool holder. The beneficial effect of the present invention is that it can quickly detect whether the symmetry of each broach is consistent when replacing the broach, simplify the tool alignment process, and improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing by broaching a roulette, and more specifically, it relates to a detection device for measuring the symmetry of both sides of a broach. Background Art

[0002] To achieve the grand blueprint of the manufacturing industry, the power problem must be solved first. There are two key points in the "Two Engines Special Project", namely aero-engines and gas turbines. The core component, the turbine disk, has a complex dovetail groove shape, high design precision, and an inclination angle. The design requirement deviation is often within 0.03 mm. Therefore, high requirements are imposed on the processing equipment and tools, and the processing difficulty is great. At the same time, due to the good strength and high cost of the materials used for the turbine disk, it is extremely urgent to overcome the unstable factors in the processing process, especially how to ensure the stability of the broach installation.

[0003] The existing measurement method after the broach is installed is only applicable to one-time forming and is not applicable to the dovetail tooth profile broaching process that requires changing the broach during processing. In the dovetail tooth profile broaching process, if the measurement and calibration are re-done every time the broach is changed, the operation is very cumbersome. Therefore, it is very necessary to design a measurement device that can measure the installation position of the broach on the machine tool and does not interfere with the broach replacement. Summary of the Invention

[0004] The present invention provides a detection device for measuring the symmetry of both sides of a broach, which solves the technical problem of cumbersome measurement operations every time the broach is changed in the dovetail tooth profile broaching process in the related art.

[0005] According to one aspect of the present invention, a detection device for measuring the symmetry of both sides of a broach is provided, which includes a bracket. The two ends of the bracket are fixedly connected to a broaching machine through self-tapping screws. There is a slider base on one side of the bracket. There is a groove on the side of the slider base close to the bracket, and the groove is in clearance fit with the bracket. There is a slider on the side of the slider base far from the bracket, and the slider is fixedly connected to the slider base. There is an opening on the slider, and a linear guide passes through the opening on the slider, and the linear guide is in clearance fit with the opening on the slider. One end of the linear guide is provided with a dial gauge holder, and the dial gauge holder is fixedly connected to the linear guide through a first locking bolt. A first limit stop and a second limit stop are fixedly arranged on the side of the linear guide close to the slider. The first limit stop is located at one end of the linear guide close to the dial gauge holder, and the second limit stop is located at the other end of the linear guide. The end of the dial gauge holder far from the linear guide is bifurcated in a Y shape, and two dial gauges are symmetrically arranged on the Y-shaped bifurcation, namely a first dial gauge and a second dial gauge. The gauge frames of the two dial gauges are fixedly connected to the dial gauge holder through second locking bolts, and the measuring heads of the two dial gauges are close to each other and form a certain angle;

[0006] A set of broaches includes a tool holder and multiple broaches. Alignment blocks are fixedly arranged at both the front end and the rear end of the tool holder.

[0007] Further, threaded holes are formed in the slider base, and the threads penetrate from one side of the slider base to the side of the groove, and a third locking bolt is screwed into the threaded holes.

[0008] Further, the probes of the first lever gauge and the second lever gauge are replaceable.

[0009] Further, the height of the tool setting block at the front end of the tool rest is lower than the height of the teeth of the broach with the lowest height, and the height of the tool setting block at the rear end of the broach is less than the height of the teeth of the broach with the highest height.

[0010] Further, a fourth locking bolt is provided on the slider base. The fourth locking bolt penetrates through the slider base and abuts against the linear guide. A hole that is in screw fit with the fourth locking bolt is provided on the slider base.

[0011] Further, the bracket is connected to the broaching machine by an angle iron or other special connectors.

[0012] The beneficial effects of the present invention are as follows: It realizes quickly detecting whether the symmetry degrees of the broaches are consistent when replacing the broaches, simplifies the tool setting process, and improves production efficiency. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present invention;

[0014] Figure 2 is a perspective view of the slider base of the present invention;

[0015] Figure 3 is a perspective view of the gauge holder of the present invention;

[0016] Figure 4 is a projection view of a set of broaches of the invention on the same plane.

[0017] In the figure: 1, bracket; 2, slider base; 3, groove; 4, slider; 5, linear guide; 6, gauge holder; 7, first locking bolt; 8, first limit stop; 9, second limit stop; 10, first lever gauge; 11, second lever gauge; 12, second locking bolt; 13, probe; 14, tool setting block; 15, third locking bolt; 16, fourth locking bolt; 17, angle iron; 18, first broach; 19, second broach; 20, third broach; 21, fourth broach; 22, fifth broach; 23, sixth broach; 24, seventh broach; 25, eighth broach; 26, ninth broach; 27, tenth broach. Detailed Embodiments

[0018] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein, and is not a limitation on the scope of protection, applicability, or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of protection of the content of this specification. Each example may omit, substitute, or add various processes or components as needed. Additionally, features described relative to some examples may be combined in other examples. Embodiment

[0019] As Figures 1 - 4 shown, a detection device for measuring the symmetry of both sides of a broach includes a bracket 1. The two ends of the bracket 1 are fixedly connected to a broaching machine by self-tapping screws. A slider base 2 is provided on one side of the bracket 1. A groove 3 is provided on the side of the slider base 2 close to the bracket 1. The groove 3 is in clearance fit with the bracket 1. A slider 4 is provided on the side of the slider base 2 away from the bracket 1. The slider 4 is fixedly connected to the slider base 2. An opening is provided on the slider 4. A linear guide 5 passes through the opening on the slider 4. The linear guide 5 is in clearance fit with the opening on the slider 4. A dial indicator holder 6 is provided at one end of the linear guide 5. The dial indicator holder 6 is fixedly connected to the linear guide 5 by a first locking bolt 107. A first limit stop 8 and a second limit stop 9 are fixedly provided on the side of the linear guide 5 close to the slider 4. The first limit stop 8 is located at one end of the linear guide 5 close to the dial indicator holder 6. The second limit stop 9 is located at the other end of the linear guide 5. The end of the dial indicator holder 6 away from the linear guide 5 is bifurcated in a Y shape. Two dial indicators are symmetrically provided on the Y-shaped bifurcation, namely a first dial indicator 10 and a second dial indicator 11. The frames of the two dial indicators are fixedly connected to the dial indicator holder 6 by a second locking bolt 12. The measuring heads 13 of the two dial indicators are close to each other and form a certain angle.

[0020] A set of broaches includes a tool holder and multiple broaches. Alignment blocks 14 are fixedly provided at both the front end and the rear end of the tool holder.

[0021] Working principle of the present invention: When using the first broach, it is necessary to adjust the positions of the bracket 1, the slider base 2 and the two dial indicators according to the length and width of the broach to ensure that the measuring heads 13 of the dial indicators can measure both sides of all the teeth of the broach within the limit ranges of the first limit stop 8 and the second limit stop 9. Then, align the dial indicators with the alignment block 14. The operator gently pushes the linear guide 5 to zero the two dial indicators when the measuring heads 13 of the two dial indicators simultaneously press both sides of the alignment block 14 at the front end of the broach. Subsequently, move the broach to make the measuring heads 13 press both sides of the alignment block 14 at the rear end of the broach, and check whether the values displayed by the two dial indicators are consistent. If they are consistent, continue the measurement; if not, re-align the dial indicators. After the alignment is completed, perform the measurement. The operator gently pushes the linear guide 5 to make the measuring heads 13 of the two dial indicators simultaneously press on both side surfaces of the teeth of the broach, record the dimensions displayed at the head and tail teeth of the first broach where the two dial indicators are located, and then compare the dimensional drop of the broach. If the deviation of a single tooth is too large, it indicates that there is a problem with the installation of the broach and it needs to be reinstalled;

[0022] After replacing the next broach, the operator gently pushes the linear guide 5 to zero the two dial indicators when the measuring heads 13 of the two dial indicators simultaneously press both sides of the alignment block 14 at the front end of the broach. Subsequently, move the broach to make the measuring heads 13 press both sides of the alignment block 14 at the rear end of the broach, and check whether the values displayed by the two dial indicators are consistent. If they are consistent, continue the measurement; if not, re-align the dial indicators. After the alignment is completed, perform the measurement;

[0023] Gently push the linear guide 5 to make the measuring heads 13 of the two dial indicators simultaneously press on both side surfaces of the teeth of the broach, record the dimensions displayed at the head and tail teeth of this broach where the two dial indicators are located, compare the dimensions at the positions of the measuring heads 13 of the current broach, and then compare the dimensional drop of the broach. If the deviation of a single tooth is too large, it indicates that there is a problem with the installation of the broach and it needs to be reinstalled;

[0024] Through the above operations, the symmetry of the broach is converted into relative values on the two dial indicators, which is convenient for the operator to measure, record and analyze, realizing the quick detection of whether the symmetry of each broach is consistent when replacing the broach, simplifying the tool alignment process and improving the production efficiency.

[0025] Furthermore, a threaded hole is provided on the slider base 2, and the thread penetrates from one side of the slider base 2 to the side surface of the groove 3. A third locking bolt 15 is screwed into the threaded hole and abuts against the bracket 1 to fix the slider base 2 to the bracket 1 after the position of the slider base 2 is adjusted.

[0026] Furthermore, the measuring heads 13 of the first dial indicator 10 and the second dial indicator 11 are replaceable. Since the heights and widths of the teeth of a set of broaches vary greatly, the measuring range of ordinary round heads is insufficient. Replacing the measuring heads with discs or long strips can increase the inspection range. At the same time, the dial indicator frame 6 can be enlarged and the two dial indicators can be lengthened according to actual needs.

[0027] Further, the height of the tool setting block 14 at the front end of the tool rest is lower than the height of the tooth of the broach with the lowest height, and the height of the tool setting block 14 at the rear end of the broach is less than the height of the tooth of the broach with the highest height. The tool setting block 14 is designed to not interfere with normal broaching, so as to prevent the tool setting block 14 from interfering with the normal broaching of the broach.

[0028] Further, a fourth locking bolt 16 is provided on the slider base 2. The fourth locking bolt 16 passes through the slider base 2 and abuts against the linear guide 5. A hole that is helically engaged with the fourth locking bolt 16 is provided on the slider base 2. The linear guide 5 can be locked during the movement measurement of the broach to ensure the measurement accuracy.

[0029] Further, the bracket 1 is connected to the broaching machine by an angle iron 17 or other special connectors. The bracket 1 is fixed to the broaching machine through the connectors. The bracket 1 is designed to avoid the broach and the components required in the processing process. The connection methods of the connectors are diverse and can be set as a detachable method.

[0030] Further, as Figure 4 shown, in an embodiment of the present invention, a set of broaches includes a first broach 18, a second broach 19, a third broach 20, a fourth broach 21, a fifth broach 22, a sixth broach 23, a seventh broach 24, an eighth broach 25, a ninth broach 26, and a tenth broach 27.

[0031] The embodiments of the present embodiment have been described above in conjunction with the accompanying drawings. However, the present embodiment is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of the present embodiment, those of ordinary skill in the art can also make many forms without departing from the purpose of the present embodiment and the scope protected by the claims, and all of them fall within the protection scope of the present embodiment.

Claims

1. A detection device for measuring the symmetry of both sides of a broach, characterized in that, It includes a bracket. The two ends of the bracket are fixedly connected to a broaching machine by self-tapping screws. A slider base is provided on one side of the bracket. A groove is provided on the side of the slider base close to the bracket, and the groove is in clearance fit with the bracket. A slider is provided on the side of the slider base away from the bracket, and the slider is fixedly connected to the slider base. An opening is provided on the slider, and a linear guide passes through the opening on the slider, and the linear guide is in clearance fit with the opening on the slider. A dial gauge holder is provided at one end of the linear guide, and the dial gauge holder is fixedly connected to the linear guide by a first locking bolt. A first limit stop and a second limit stop are fixedly provided on the side of the linear guide close to the slider. The first limit stop is located at one end of the linear guide close to the dial gauge holder, and the second limit stop is located at the other end of the linear guide. The end of the dial gauge holder away from the linear guide is bifurcated in a Y shape, and two dial gauges are symmetrically provided on the Y-shaped bifurcation, namely a first dial gauge and a second dial gauge. The gauge frames of the two dial gauges are fixedly connected to the dial gauge holder by a second locking bolt, and the measuring heads of the two dial gauges are close to each other and form a certain angle. A set of broaches includes a tool holder and multiple broaches, and tool setting blocks are fixedly provided at both the front end and the rear end of the tool holder.

2. The detection device for measuring the symmetry of both sides of a broach according to claim 1, wherein, Threaded holes are formed in the slider base, and the threads penetrate from one side of the slider base to the side of the groove, and a third locking bolt is screwed into the threaded holes.

3. The detection device for measuring the symmetry of both sides of a broach according to claim 1, wherein The measuring heads of the first dial gauge and the second dial gauge are replaceable.

4. The detection device for measuring the symmetry of both sides of a broach according to claim 1, characterized in that, The height of the tool setting block at the front end of the tool holder is lower than the height of the teeth of the broach with the lowest height, and the height of the tool setting block at the rear end of the broach is less than the height of the teeth of the broach with the highest height.

5. The detection device for measuring the symmetry of both sides of a broach according to claim 1, wherein A fourth locking bolt is provided on the slider base. The fourth locking bolt penetrates through the slider base and abuts against the linear guide, and a hole that is in screw fit with the fourth locking bolt is provided on the slider base.

6. The detection device for measuring the symmetry of both sides of a broach according to claim 1, characterized in that, The bracket is connected to the broaching machine by an angle iron or other special connectors.

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